Frequency agile hold-sample-hold phase detector

Details Frequency agile hold-sample-hold phase detector Frequency agile hold-sample-hold phase detector

1980-02-14

1982-08-17

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 17, 331 27, 328134, H03L 708

Patent

active

043452191

ABSTRACT:
A frequency agile phase detector includes a digital frequency detector section connected to a hold-sample-hold phase detector section. The digital frequency detector develops control signals related to frequency differences between a reference periodic signal and a variable periodic signal. The control signal determines the amplitude of a voltage signal impressed across a first hold circuit. A sample signal acts to sample and transfer the sample voltage signal from the first to a second hold circuit so as to reduce phase differences between the reference and variable periodic signals. The detector is incorporated into a phase locked loop using the VCO output as the variable periodic signal so that acquisition and lockup of the loop is obtained even when the two periodic signals are decades apart. Additionally, the hold-sample-hold section aids in reducing the reference and sampling energy required which results in a spectrally pure output signal.

REFERENCES:
patent: 3701909 (1972-10-01), Holmes et al.
patent: 3826988 (1974-07-01), Wise et al.
patent: 3866133 (1975-02-01), Debloois et al.
patent: 3906376 (1975-09-01), Bass
patent: 3973212 (1976-08-01), Walloch
patent: 3991322 (1976-11-01), Bush et al.
patent: 4038568 (1977-07-01), May et al.
patent: 4099125 (1978-07-01), Bennett, Jr. et al.
patent: 4151473 (1979-04-01), Coleman et al.

Affiliated with

Also associated with

Rating

Frequency agile hold-sample-hold phase detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency agile hold-sample-hold phase detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency agile hold-sample-hold phase detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-188882